Westinghouse, Type A Current Balancing Auto Transformer, Ratio Any Ratio between 10.8:5 And 5:5Amps, 25-60Hz, 55C Rise, 2500 Volt Test, V.A. 100, Cat# 608A938G02
608A938G02 Current Balancing Auto Transformer by Eaton, Cutler-Hammer or Westinghouse